| Acronym | Meaning |
| LOI | Loss On Ignition |
| WSSA | Weed Science Society Of America |
| NRCC | National Research Council Of Canada |
| SCBC | Self-consistent Basis And Configuration |
| IEM | Interstitial Electron Model |
| CUP | Conditional Use Permit |
| PHF | Perturbative Hartree-Fock |
| SIM | Standards Injection Module |
| PCF | Plasma Centrifugal Furnace |
| BCRU | British Committee On Radiation Units And Measurements |